freeCodeCamp organizes a very large open-source learning project around a README that acts as orientation, contributor gateway, and product map.
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Vue Core keeps repository-level Markdown focused on project identity, status, contribution, and development commands, leaving long-form learning content to dedicated documentation.
Ansible's README is a routing document for installation, docs, community, issue reporting, security, and development rather than a replacement for the full manual.
Homebrew's README keeps the root experience practical: installation, documentation, contribution, community, sponsorship, and project identity are easy to locate without excessive narrative.
React's top-level README is intentionally compact: it identifies the project, routes users to canonical docs, explains contribution boundaries, and avoids duplicating the full documentation set.